The Nexus 6 also has a 13 megapixel rear-facing camera that features a dual LED ring flash and 4K video capability. The front-facing camera is limited to two megapixels and standard HD resolution. The battery on the Nexus 6 is an enormous 3220 mAh unit that Google claims will last more than 24 hours on a full charge, and can be used for six hours on just 15 minutes of charging time.